34 Psyche [April 



attains a length of one and a half millimeters. In the shape of 

 head and abdomen, the curious covering of short, fine spiny hairs, 

 and in the markings, the new species of differs strongly from climax. 

 It shows more of a resemblance, in shape and markings of head, 

 and general appearance of body to T. penicillatus than to any 

 other species of the genus, which resemblance, if it suggests any 

 near relationship — it probably does not — is most extraordinary, 

 as penicillatus has been recorded only from a kangaroo ! However, 

 it has been recorded but once, and that by Piaget, its describer, 

 who had his specimens from a single kangaroo {Macropus penicil- 

 latus) in the Zoological Garden at Rotterdam. Zoological garden 

 specimens of Mallophaga are always open to suspicion as to the 

 host records, the conditions, especially in such a crowded garden 

 as I remember the Rotterdam one to be, being unusually favorable 

 for straggling. However, the resemblances between T. penicillatus 

 and our new species from the goat may be only superficial and non- 

 significant of relationship. The new species may be described as 

 follows : 



Trichodectes hermsi sp. nov. (Fig. 1). 



Many males, females and young from a young merino goat, Inverness, Marin Co., 

 Calif, (coll. W. B. Herms). ' 



Female: Body, length 2.4 mm., width (widest across fifth abdominal segment), 

 1.32 mm., head, length .J'l mm., nadth .57 mm. General color pale yellowish brown, 

 the head and thorax and the median abdominal blotches darker than the almost 

 whitish ground color of the abdomen. Dorsal surface of the whole body with a sparse 

 covering of short, fiae, spine-hairs. In addition there are longer hairs along the 

 lateral margins and in regular segmental transverse series on the abdomen. 



The head is broader than long, the region behind the antennae being distinctly 

 and suddenly broader than the part in front. The clypeal margin is flatly convex, 

 and the occipital margin shallowly concave. The antennae are long enough to 

 reach, if bent directly backward, to the hind lateral angles of the head, but no 

 farther than that. The head is uni-colored, showang no markings except the slightly 

 darker narrow margin all around, and a pair of short, distinct narrow bands (more 

 like small linear blotches) extending from base of antennae to the clypeal margin. 

 Several not long hairs in each temporal angle and the whole head sparsely covered 

 with short, fine spine-hairs. 



Prothorax with sharply produced, conspicuous lateral angles, with a group of five 

 or six rather strong, although not long, hairs in each angle. It is much wider than 

 long, as is also the metathorax which is about the same width as the prothorax, but 

 is a Uttle longer. The metathorax has a doubly angulated posterior margin, with 

 the median portion concave. There are numerous longish stiff hairs along the pos- 

 tero-lateral margins of the segment, and a transverse dorsal series of a dozen or 



