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Show 1893.] LR. G. L. JOHNSON ON THE SEAL'S EYE. 719 banded with pale fuscous, the anterior legs a little clouded with fuscous. Pronotum smooth, obsoletely, minutely punctate on the posterior lobe. Hemelytra longer than the abdomen, the veins and a series of spots at the apex of the membrane fuscous. Outer margin of the abdomen piceous. Length to end of abdomen 4 millim., to tip of membrane 4| millim.; width of base of pronotum f millim. One specimen is in the collection from this island. This species seems to be not rare in Cuba. Several specimens have been sent to m e from that island by Dr. Gundlach, and others are in his collection. Fam. VELiIDiE. Genus M I C R O Y E L I A , Westw. M I C R O V E L I A M A R G I N A T A , sp. nov. Dull black, nearly wedge-shaped, minutely pubescent, and obsoletely punctate, with the breast orange and the pronotum bordered with orange. Head rather blunt, convex between the eyes, a little compressed and produced at the end of the clypeus, the underside pale testaceous. Antennse stout, closely hairy, black ; third and fourth joints longer than the others, the fourth longest, acutely tapering at tip ; the basal joint thicker than the others, much longer than the second, pale beneath. Rostrum stout and swollen at base, reaching behind the anterior coxae, pale testaceous, piceous at tip. Pronotum broad, moderately convex, with the humeral angles bluntly ronnded, and not prominent as in M. capitata, Guer. Pectus broadly yellow, dusky on the middle and posteriorly. Coxae and legs pale testaceous; the posterior legs dusky above, and fulvous on the middle of the tibiae. Scutellum dusky, mostly concealed by the pronotum. Wing-covers black, bluntly rounded at tip. Abdomen black above, tinged with lead-colour and a little sericeous beneath, the lateral margins broadly fulvous; the venter has sometimes a row of fulvous dots ach side. Length to tip of abdomen lf-2 millim., to end of wing-covers 2| millim.; width of pronotum | millim. Several specimens, both winged and unwinged, were collected by Mr. Smith in the pools of cool water at various localities on the island. 3. Observations on the Refraction and Vision of the SeaPs Eye. By G. LINDSAY JOHNSON, M.D., F.Z.S. [Eeceived November 21, 1893.] In the course of my investigations on the vision of the Mammalia, I was particularly struck with certain peculiarities in the eye of Phoca vitulina, the Scotch Seal, so frequently met with off our northern coasts. The eye, as everyone must have observed, is |
