J. E. Hull 175 



The left palpus is of the male form, the palpal organs being well developed ; the 

 right palpus is somewhat tumid with the appearance of being loosely covered at the 

 apex, and is thus not quite of the normal female shape. The epigyne is very im- 

 perfect, the parts on the left side being obsolete, and those on the right being very 

 much distorted. ...The specimen is thus male on the left side, but not quite female 

 on the right. 



It should be remarked that asymmetry of the body is not to be 

 expected in this species as the two sexes are of approximately the same 

 size ; indeed sexual dimorphism is very feeble. 



Not having seen the specimen, I can only judge the description of 

 the genital area — loosely called the 'epigyne' — by the figure given. 

 To me this figure (in the explanation of the plate — Naturalist, 1910, 

 p. 229 — described by error as ' epigyne of female ') presents much the 

 appearance one would expect from an amalgamation of the right half 

 ■perfectly developed) of an epigynium with the left half (probably im- 

 perfect) of an epiandrium. The spermatheca on the right seems quite 

 normal — in fact nothing abnormal save the inevitable disturbance of the 

 median septum. If there be defect it seems to me to be on the left, 

 which in a normal epiandrium is wholly covered by the dark pubescent 

 cuticle of the epigaster, but here unmistakably exhibits vestiges of a 

 female element of about the same strength as the male element in the 

 right palp. If I interpret it rightly this particular gynandromorph 

 presents a reciprocal combination — a left side perfectly male in front, 

 imperfectly male behind ; and a right side imperfectly female in front 

 and perfectly female behind. 



I am the more confirmed in this opinion because it seems to agree 

 with a Hilaira excisa Cb. taken by me near Haltwhistle, Northumber- 

 land, in August 1898. The specimen was accidentally destroyed and 

 never recorded. It was certainly male on the right as regards palp and 

 carapace, the tarsus of the left palp being crassate and the occipital tuber 

 (characteristic of the male) nearly bilaterally perfect ; so that the left 

 anterior region was, at most, predominantly female. I unfortunately 

 cannot speak with certainty of the genital area. There was asymmetry 

 both of cephalothorax and abdomen, but I have no accurate note of it. 



3. One side perfectly female before and male behind, the other per- 

 fectly male in front and female behind. 



This is the condition of things in my Lophomma herbigradum. 

 I reproduce my original note. 



A fine gynandrous example of this common species was taken at Ninebanks in 

 the spring of 1910. For the most part this specimen exhibits the usual phenomena 



