ON SOME RARE ARACHNIDS 6 1 



apex of the palpal organs then shows three prominent teeth 

 arranged in a rather peculiar position (see fig. 23). The male 

 is about I'l mm. in length. Mr. Falconer also sent me a 

 female obtained in Huddersfield this year, and I here give 

 figures of its vulva. This was quite normally placed, but in 

 the type described by Mr. Cambridge^ it appears to have 

 been situated very far back on the ventral surface of the 

 abdomen. My specimen also seems rather larger than the 

 one he figured, which was under i mm. in length. The 

 absence of both spines on tibiae IV., the absence of cephalic 

 eminences or strife in the male, the non-coriaceous integu- 

 ment, the short heart-shaped sternum, and the simple palpi of 

 the female, would seem to point a close relationship between 

 the genus Maro and the Neriene group of M. Simon. 



Maro Falconerii (sp. nov.). Plate IV., figs. 16, 17, 18, 

 19, and 20. 



This little spider closely resembles M. minntus (Camb.). It 

 is, however, slightly smaller, my largest example only measur- 

 ing I mm., whilst the smallest was barely -gmm. in length. 

 In facies, colour, arrangement of eyes, relative length of legs, 

 etc., the species are closely similar, the present however being, 

 if anything, of rather a clearer yellowish brown than its con- 

 gener. There is one secondary sexual character, viz., a strong 

 prominent tooth on the anterior face of the basal joint of each 

 falx. This is situated near the groove in which the fang lies, 

 but in front of its anterior border. It is found only in the 

 male, and its size varies considerably in different individuals. 

 It is, however, quite easy to see in all my specimens of that 

 sex. 



The females of this species and M. mimitus (Camb.) are 

 easily distinguished by the total dissimilarity of the vulvae — 

 that of the present species being a trifle like the correspond- 

 ing structure in Tapinocyba pi'czcox (Camb.). This latter 

 spider looks large and clumsy by the side of Af. Falconei'ii. 



X Op. cit. 



