100 Mr. R. M« Andrew on the Mollusca observed during a 



are almost in contact ; the posterior eyes of the quadrilateral 

 figure are the largest, and the anterior ones are the smallest of 

 the eight. Cephalo- thorax rounded on the sides, compressed 

 before, elevated and convex in the cephalic region, depressed be- 

 hind, glossy, and of a very dark brown colour, with a broad 

 band in the middle, which decreases in breadth to its posterior 

 extremity where it is yellowish white, the anterior part being 

 yellowish brown. Falces powerful, conical, vertical, armed with 

 teeth on the inner surface, and of a reddish brown colour, the 

 base being the darkest. Maxillae short, straight, enlarged and 

 rounded at the extremity : lip semicircular, but somewhat pointed. 

 These parts are of a very dark brown colour, their extremities 

 being faintly tinged with red. * Sternum heart-shaped, with small 

 prominences on the sides, opposite to the insertion of the legs ; 

 its colour is brownish black. Legs moderately long, provided 

 with hairs and a few fine spines ; they are of a yellowish brown 

 colour, the femora being marked with brown longitudinal streaks ; 

 the first pair is the longest, then the second, and the third pair 

 is the shortest; each tarsus is terminated by the customary 

 number of claws of the usual structure. The palpi are short and 

 of a yellowish brown colour, the radial and digital joints being 

 the darkest. Abdomen oviform, convex above, projecting greatly 

 over the base of the ce phalo -thorax ; it is of a pale yellowish 

 brown colour on the upper part, and is marked with four minute 

 brown spots which form a quadrilateral figure whose anterior 

 side is the shortest ; a narrow, irregular, dark brown line extends 

 along each side, from the anterior part, more than two-thirds of 

 its length, and contiguous to the inferior margin of these lines, 

 which are most distinct at their extremities, there is a parallel 

 band of yellowish white ; the sides are dark brown freckled with 

 paler brown, and the under part is brownish black, bounded 

 laterally by a yellowish white band extending from the anterior 

 extremity beyond the spinners; the sexual organs are almost 

 concealed by a scale-like process situated on each side of them. 



The specimen of Ep'eira calva described above j^aSjj^j^^jl^ 



June at Interlacken. ton ouiinassiq 



irjY yddn-xda ii Ainf 



XI. — Note of the Mollusca observed during a short visit to the 

 Canary and Madeira Islands, 5fc., in the months of April and 

 May 1852. By R. M^Andrew, F.L.S. 



On the 13th of March I sailed from Liverpool in a small yacht, 

 on a voyage undertaken to benefit the health of some members 

 of my family. We reached Lisbon after a boisterous navigation 

 often days passed without any occurrence worthy of note, and 



