42 Psyche [February 



one-half its length. Distal segments of last pair of legs large, stout, and hook- 

 like; each bears two small, dull, tooth-like tubercles on its inner margin near 

 the base; penultimate segment about as long as the last segment. 



Females of the Copulating Stage. Several males were found in copulation 

 with the young females. These females were much smaller than the males 

 and of a hyaline appearance. Mature females were not found. 



Length of male, 0.60 mm.; breadth, 0.41 mm. 



From a tropical bird. Many specimens were sent to me by 

 A. O. Gross from a sea bird killed in the Bermuda Islands. 



Gen. Analges Nitzsch. (Analgesidse.) 

 Analges passerinus Linn..^^ (PI. 7, fig. 1). 



Male. Integument moderately and uniformly chitinized. Body and 

 legs clothed with many very large, long bristles. 



Cephalothorax much broader than long; beak rather small, palpi reaching 

 its tip. From the posterior margin of the cephalothorax there extends back- 

 ward two pairs of long bristles which reach as far as the tip of the abdomen. 



Abdomen broadest at the insertion of the third pair of legs, rounded on the 

 postero-lateral margin while it is terminated in two small projection near the 

 median line. On its dorsal surface near the insertion of the third legs there 

 are two very long bristles; on the lateral margins in front of the third legs 

 are situated three pairs of very large bristles, the posterior of which are only 

 about one-half as long as the other two pairs; at the tip of the abdomen are 

 three pairs of bristles, the outer pair of which is less than half as long as the 

 other two pairs. 



Legs of the anterior group subequal. Legs of the third pair enormously 

 enlarged, being almost equal to one-half the width of the body, and extending 

 one-half their length beyond the tip of the abdomen; last segment formed 

 into a great claw which has a tooth-like, bristle-bearing tubercle on its inner 

 margin near the middle. This segment bears in all, four large bristles. Legs 

 of the fourth pair reaching beyond the posterior margin of the abdomen by 

 the length of their last segments. 



Length, 0.45 mm.; breadth, 0.27 mm. 



Female. Integument less chitinized than in the male; body subrectangular. 



Cephalothorax much broader than long; beak of moderate size, palpi extend- 

 ing slightly beyond its tip. From near the posterior dorsal margin of the 

 cephalothorax there extends a long pair of bristles which reaches to the 

 posterior margin of the body. 



Abdomen with sides about parallel; postero-lateral margin oval. On the 

 shoulder is situated a pair of long bristles which extend beyond the posterior 

 end of the body; two other pairs of bristles are found on the dorsal surface 



' This species does not agree with the one which figures in Banks' " Treatise on the Acarina," 

 Proc. U. S. Nat. Mus., vol. 28, p. 91, under the name of A. passerinus, but agrees perfectly 

 with a named specimen of A . passerinus sent from Europe by Dr. Trouessart. 



