144 



whereas in E. brevis the whole cephalothorax , even the pars cepha- 

 lica, is finely chagrined by numerous small punctures. In this -E 1 . 

 brevipes % agrees with a fullgrowtf d 1 captured in Ostergotland by Dr 

 Haglund, and which I therefore consider to be the d* of E. brevipes. 

 This cf differs from E. brevis <$ also by the absence of the pro- 

 jecting lobe on the outside of the tibial joint (see preceding species); 

 that joint is but little shorter than the patellar joint: it is somewhat 

 dilated at the extremity, witli a little downward-curved tooth at the 

 extremity above, outward, and another, smaller, beneath, inwards. 

 The head is rather higher than in E. brevis, sloping rather strongly 

 backward for a considerable distance: its uppermost part is short, 

 rounded-convex. In E. brevis the head passes into the pars thora- 

 cica by almost insensible gradations, and is but slightly convex; in 

 both species the highest point of the head is situated a little behind 

 the centre eyes. The colour of E. brevipes is the same as that of 

 E. brevis. 



A (5-specimen of Ceratina rotunda, lent me by Menge, appears 

 to me to differ from E. brevipes $ by its rather smaller size, 

 blackish yellow cephalothorax and greyish yellow legs, and especially 

 by its anterior row of eyes being straight, and the clypeus, viewed 

 in profile, being very convex, almost geniculated, whereas in E. 

 brevipes $ the anterior row of eyes is clearly curved forward and 

 the clypeus almost straight. These differences forbid my unreservedly 

 classing C. rotunda as a synonym to E. brevipes, which it in other 

 respects greatly resembles 



l) I here give descriptions of an easily recognizable Swedish Erigone, and 

 of a small Erigone-like Theridium, which both appears to be new to science: 



Erigone mordens N. Cephalothorax dense impresso-punctatus, cum mandibulis 

 magnis, divaricantibus ferrugineus; parte cephalica altiore, linea impressa utrinque 

 pone oculos laterales posticos; pedes palpique fusco-testacei, abdomen testaceo- 

 cinereum ; palporum pars patellaris paullo longior quam latior, tibialis apice , supra, 

 versus latus interius in procursum minorem porrectum producta. — $ ad.; long. 

 c:a 2y 2 millim. 



Cephalothorax c:a 1 millim. longus, muticus, punctis parvis densis impressis 

 rugosus, sub-nitidus, impressionibus cephalicis et fovea pone medium mauifestis; 

 pars cephalica supra partem thoracicam paullo elevata, a latere visa dorso a?qua- 

 liter arcuato in partem thoracicam paullo declivis , serie pilorum fortium secundum 

 medium instructa; pone oculum lateralem posticum sulco longitudinali postice 

 angustato utrinque impressa. Clypei altitudo longitudinem linear a 3 oculis seriei 

 anticse occupatse sequat; oculi medii antici reliquis, qui sub-a?quales sunt, multo 

 minores et, ut oculi laterales, contingentes ; postici laterales a mediis spatio distant, 

 quod oculi diametrum superat et majus est quam spatia quibus distant medii 



